Nichkhun's... Korean exercise book. You can put your pants back on, ladies. The photo was posted on 2PM's fan page. Nichkhun proudly takes out the exercise book he uses to learn Korean so that he can show his fans how he worked so hard, but quickly becomes a sad bear when he finds that Taecyeon doodled all over the book. By the way, Taec is 21 years old. Stay tuned to allkpop for more painfully cute pictures of Nichkhun and don't forget to check out 2oneday forums.